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SET THE BASS BOOST

GX-A604:When you’re using the amplifier’s rear channels to power a subwoofer, the Bass Boost switch can provide 12 dB of bass boost at 45 Hz. (The switch only affects the amplifier’s rear channels.) Set this switch according to your personal taste, but if using it causes audible distortion or bottoming of your subwoofer we recommend setting it to "OFF". CAUTION: Only use the Bass Boost switch if you’ve configured the rear channels to power a subwoofer. Using the Bass Boost switch with full-range speakers can damage the speakers.

GX-A602:When you’re using the amplifier in bridged mode to power a subwoofer, the Bass Boost switch can provide 12 dB of bass boost at 45 Hz. (Set this switch according to your personal taste, but if using it causes audible distortion or bottoming of your subwoofer we recommend setting it to "OFF". CAUTION: Only use the Bass Boost switch if you’re using the amplifier to power a subwoofer. Using the Bass Boost switch with full-range speakers can damage the speakers.

GX-A3001:The Bass Boost control can provide up to 12 dB of bass boost at 45 Hz. Set this control according to your personal taste, but be careful not to set the control at a high enough level to cause audible distortion or bottoming of your subwoofer.

POWER AND PROTECTION LEDS

POWER LED

LED Illuminates orange: Normal operation (power is on).

LED is off: Amplifier is in standby mode.

PROTECTION LED

The amplifier’s Protection LED should remain off during normal operation. If there is no sound from the amplifier and the Protection LED illuminates red, see Troubleshooting, on page 24.

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JBL GX-A602, GX-A3001 owner manual SET the Bass Boost, Power and Protection Leds, Power LED, Protection LED